Fix

Author: Roger Thomas

pandas/core/algorithms.py

@@ -963,8 +963,7 @@ def select_n_frame(frame, columns, n, method, keep):
         else:
             filtered_frame = frame[series.isin(values)]
             if len(filtered_frame) == len(values):
-                # Values are unique in series => frame right now is the
-                # desired ordering => reindex and break
+                # Values are unique in series => reindex and break
                 frame = frame.reindex(values.index)
                 break
             frame = filtered_frame.sort_values(